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Two-dimensional magnetophotonic crystals and analysis of the mode field

Zhang Hao Zhao Jian-Lin Zhang Xiao-Juan Di Nan

Two-dimensional magnetophotonic crystals and analysis of the mode field

Zhang Hao, Zhao Jian-Lin, Zhang Xiao-Juan, Di Nan
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  • Cited By: 0
Publishing process
  • Received Date:  18 September 2006
  • Accepted Date:  19 November 2006
  • Published Online:  05 March 2007

Two-dimensional magnetophotonic crystals and analysis of the mode field

  • 1. 西北工业大学理学院光信息科学与技术研究所,陕西省光信息技术重点实验室,西安 710072

Abstract: The mode field and effective index of two structures (square air core and circular air core) of two-dimensional magnetophotonic crystals is analyzed using finite-difference frequency-domain (FDFD) method. According to the result of numerical analysis, the two degenerate fundamental modes become non-degenerate (L-mode and R-mode) in the structures, and the two corresponding effective indices are different. The Faraday rotation of these two structures is enhanced compared with that of the continuous magneto-optical materials. By choosing proper parameters of the air core, the Faraday rotation can be increased by one order for the square air core structure and 4 times for the circular core structure. The polarization state of optical waves is changed after passing through the structure. With the increasing of Faraday rotation, the ellipticity of outgoing optical waves is increased. Finally, we discuss the cause of the phenomena and present a method to resolve the problem of variation of ellipticity by introducing defect in the structure.

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